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The characteristics of the crane operation determine that it must be safe in use.

Lifting work is an industrial process that transports mechanical equipment or other items from one place to another. What are the characteristics of lifting machinery?

First, the lifting machinery usually has a large structure and a complex mechanism, which can complete the lifting and horizontal movements. For example, a bridge crane can complete three movements of hoisting, cart running and trolley operation; the gantry crane can complete four movements of lifting, luffing, turning and cart running. In the course of the operation, it is often the operation of several different directions of motion at the same time, which is technically difficult.

Second, the lifting equipment is loaded with a variety of heavy objects, and the load is variable. Some heavy objects weigh hundreds of tons or even thousands of tons, some objects are several tens of meters long, the shape is also very irregular, there are scattered particles, hot melt, flammable and explosive dangerous goods, etc., the lifting process is complicated Danger.

Third, most lifting machinery needs to operate in a large space, some have to install rails and wheels (such as tower cranes, bridge cranes, etc.); some have to be loaded with tires or tracks to walk on the ground (such as cars Hanging, crawler cranes, etc.); some need to walk on the wire rope (such as passenger transport, freight aerial ropeway), the activity space is large, once the impact of the accident is also large.

Fourth, some lifting machinery need to directly carry people on the rails, platforms or wire ropes for lifting movements (such as elevators, lifting platforms, etc.), and its reliability directly affects personal safety.

5. The hoisting machinery is exposed and has many moving parts, and it is often in direct contact with lifting workers (such as hooks, wire ropes, etc.), and there are many potential risk factors.

Sixth, the operating environment is complex. From large steel conglomerates to modern ports, construction sites, railway hubs, tourist resorts, there are lifting machinery in operation; workplaces often encounter high temperature, high pressure, flammable and explosive, transmission lines, strong magnetic and other risk factors. , posing a threat to equipment and workers.

Seven, crane operations often require multiple people to cooperate and carry out together. An operation requires commanders, strapping, driving, etc. to cooperate with the skilled, coordinated, and responsive. Operators should have the ability to handle on-site emergencies. The close cooperation between multiple operators is usually more difficult.